please help, tiny plug, rxp engine rebuild

Ok so today I finally got around to reassembling my 06 Rxp engine after a complete tear down due to supercharger failure. After assembly I noticed 2 small aluminum, about 1/8th in diameter, discs/plugs on my workbench. The only thing that was on it was PTO housing and water pump which I cleaned and assembled there.I also unpacked supercharger which was rebuilt by jerry. I have no clue where they came from, they are recent because I totally cleaned up entire area before I started.I will send pics.